- Moon Phase TodaySee the current moon phase, illumination, Moon age and the Moon’s zodiac sign, plus the dates of the next new and full moon. Check any date from 2020 to 2035.
- Zodiac Sign CalculatorEnter your birthday to find your Sun sign, element, modality and ruling planet. Born on a cusp? It works out where the Sun really was that year.
- Rising Sign CalculatorFind your Ascendant from your birth date, time and city, with your Sun and Moon signs for the same moment: your big three in one step.
- Zodiac Compatibility ChartPick any two signs to compare their chemistry, communication and long-term potential, with a free preview for all 78 pairings.
Free tools, no sign-up
Every calculator on this page is free and runs entirely in your browser. There is nothing to install, no account to create, and the birth details you type are never sent anywhere. The astronomy behind them is real: the Sun and Moon positions come from the standard published series astronomers use for almanac work, and the zodiac signs follow the tropical system used in Western horoscopes.
Where to start
If you only know your birthday, begin with the zodiac sign calculator. If you also know your birth time, the rising sign calculator gives you your Sun, Moon and rising signs together, which is the foundation of any birth chart reading. The moon phase tool is the one to bookmark: it updates every time you open it.
Astrology content is for entertainment and reflection.